Our DBAs know the dedication required to make parameterization changes in a productive environment, and the number of manual tests that are required to achieve a minimum of guarantees before approaching a database migration or a version upgrade. Beyond the expensive software solutions of some manufacturers, in GPS we understood that having a tool that allows us to reproduce and analyze queries in different environments, simulating the response and performance before implementing changes, would be at the very least a SAVING of time for us and soon for our clients. For this reason we present GPS Query Performance.